7322894045

25

Tableau 2.3 Mcan growth ratcs (p) and standard deviations for cach algac and cyanobacteria species at diffcrent glyphosate concentrations

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Species

[glyphosate] pg L'

	Control	10	50	100	300	500	1000
Microcystis aeruginosea (CPCC632)	0.47 ±0.06	0.46 ±0.06	0.44 ±0.07	0.35 ±0.14*	0.12 ±0.24*	0 ±0.02*	0 ±0.04*
Microcystis aeruginosea (CPCC299)	0.44 ±0.09	0.40 ±0.09	0.32 ±0.12	0.24 ±0.2*	NA	0.03 ± 0.06*	0 ± 0.09*
Microcystis sp.	0.50 ±0.04	0.47 ±0.03	0.42 ±0.05	0.26 ±0.05*	0 ±0.04*	0 ±0.04*	0 ±0.13*
Scenedesmus obliąuus (CPCC5)	0.52 ±0.05	0.35 ±0.30	0.26 ±0.11*	0.20 ±0.16*	0.29 ±0.10*	0 ±0.11*	0 ±0.19*
Ankistrodesmus falcatus	0.75 ±0.03	0.71 ±0.03	0.66 ±0.02	0.64 ±0.01	0.59 ±0.04	NA	0.30 ±0.12
Oocystis soli tar i a •	0.46 ±0.01	0.43 ±0.03	0.40 ±0.05	0.21 ±0.03*	NA	0.08 ±0.02*	0 ±0.03*
Chlamydomonas snowii	0.47 ±0.04	0.41 ±0.07	0.40 ±0.07	0.42 ±0.13	0.42 ±0.05	0.51 ±0.02	0 ±0.38*
Chlamydomonas reinhardtii (CPCC125)	0.67 ±0.24	0.61 ±0.25	0.55 ±0.22	0.61 ±0.18	0.45 ±0.06*	0.19 ±0.21*	0.10 ±0.10*
Cryptomonas obovata	0.21 ±0.05	0.23 ±0.07	0.23 ±0.08	0.23 ±0.04	0.17 ±0.02	0.17 ±0.08	0.007 ±0.02*

* Indicates treatments that are significantly diffcrent from the control treatment without glyphosate exposure (a = 0.05).